In a randomized trial of 64 post-stroke patients, adding penetrating acupuncture (a needling technique crossing acupuncture meridians) to sling exercise therapy produced larger improvements in lower limb motor function, balance, and muscle tone compared to sling exercise alone . Both interventions combined with standard rehabilitation showed meaningful gains, but the evidence base for this specific acupuncture technique remains limited to this single study.
Researchers divided 64 patients with post-stroke hemiplegia (one-sided paralysis) into two groups. Both received standard stroke rehabilitation, routine acupuncture, and sling exercise therapy (SET), a resistance-based training method using suspension straps. The experimental group received an additional intervention: penetrating needling therapy, where acupuncture needles were inserted at specific points on the lower limb and directed to pass through tissue toward other acupuncture points. The needles targeted pathways from Ququan to Xiyangguan, Yanglingquan to Yinlingquan, Fuyang to Jiaoxin, and Qiuxu to Zhaohai.
After treatment, both groups improved significantly on every measured outcome. Motor function (assessed with the Fugl-Meyer scale for lower extremity) and standing balance (Berg Balance Scale) scores increased. Muscle spasticity (stiffness) decreased. Postural sway measurements improved across all parameters: eyes-open and eyes-closed conditions showed reduced movement variability. Weight distribution shifted, with less reliance on the unaffected leg and more symmetrical loading between sides. Step frequency and speed both increased.
The key finding: the penetrating needling group achieved larger improvements across all measures compared to the sling exercise-only group. The difference was statistically significant on every outcome tested. The researchers propose that penetrating needling helps rebalance weight distribution between the affected and healthy sides by shifting the center of gravity toward the midline, which enhances standing stability and reduces asymmetrical gait patterns.
However, this result comes from a single trial without blinding. The control group received less total treatment (SET alone versus SET plus penetrating needling), making it unclear whether the additional needling itself provides benefit or whether more total treatment time explains the difference. The study reports no sample size calculation and contains no information about treatment duration, frequency, or baseline demographic matching.
If you are recovering from stroke with leg weakness and balance deficits, this research suggests that acupuncture combined with structured resistance exercise may improve outcomes beyond structured exercise alone. Sling exercise therapy is a legitimate rehabilitation modality with established benefits for motor recovery. This trial indicates adding penetrating acupuncture could enhance those benefits.
The practical caveat: this specific technique (penetrating needling with these exact acupoint combinations) has been tested in only one published trial. Standard evidence-based stroke rehabilitation already incorporates resistance-training and active-recovery protocols with demonstrated efficacy. If considering acupuncture as an adjunct, discuss with your stroke rehabilitation team whether the added cost and time commitment align with your recovery goals. The study suggests potential benefit, but does not establish that penetrating needling is necessary for recovery.
The balance and motor improvements seen in both groups reflect the proven role of rehabilitation intensity and variety. Whether you pursue the additional acupuncture technique or rely on standard SET, consistency with your rehabilitation program is the largest determinant of outcome.
| Parameter | Details |
|---|---|
| Study Type | Randomized controlled trial |
| Sample Size | 64 participants (32 per group after dropouts) |
| Condition | Post-stroke hemiplegia with lower limb motor deficit |
| Intervention | Sling exercise therapy plus penetrating acupuncture (targeting 4 meridian pathways on lower limb) versus sling exercise therapy alone; all groups received standard medical care and routine acupuncture |
| Primary Outcomes | Fugl-Meyer Assessment lower extremity motor score, Berg Balance Scale, Modified Ashworth Scale (spasticity), gait parameters (force plate analysis), postural sway (eyes-open and eyes-closed) |
| Results | Both groups showed improvements; penetrating needling group achieved significantly larger gains on all measures (p < 0.05) |
| Limitations | Single center, no blinding, no sample size justification, unequal treatment volume between groups, no follow-up data beyond immediate post-treatment, unclear treatment duration/frequency, limited detail on baseline matching |
| Evidence Tier | B tier: RCT with methodological limitations and single-trial evidence for this specific technique |
Published in *Zhen ci yan jiu* (Acupuncture Research) | PubMed ID: 42343681
The study is a Chinese-language publication reporting preliminary evidence that penetrating acupuncture combined with sling exercise outperforms sling exercise alone in post-stroke motor and balance recovery. The findings are mechanistically plausible and statistically robust within this trial, but replication in a larger, blinded, multi-center study would be needed to establish this as standard care.
ProtocolEngine provides general health information based on published research. This is not medical advice. Consult a healthcare professional before starting any supplement or health protocol.